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NF2000
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| Posted: Jun 07 2014 at 2:21am | IP Logged
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Hi,
I have a 2000 Frontier 4cyl 2wd manual transmission.
Lately there has been an intermittent acceleration problem that only occurs from a stopped position.
I start letting out the clutch and depress the gas pedal and there isn't any response, (no increase in RPMS or speed). When this happens I must immediately depress the clutch or the truck stalls. This problem is intermittent and cannot be replicated on demand. Further, this doesn't seem to occur at driving speeds.
I checked the pedal and throttle cable / leakage and both appeared to be functioning normally.
Any ideas on the cause?
Thanks.
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lakota
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| Posted: Jun 08 2014 at 8:11am | IP Logged
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..
Have you tried throttle body cleaner yet?
Good luck.. Don S..
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'99 4x4 3.3 Frontier Se KC Auto, 48,000 miles
'76 4x4 401 Wagoneer QT
'04 FWD 1.8 Sentra '08 FWD 2.4 Camry LE
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NF2000
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| Posted: Jun 08 2014 at 10:41am | IP Logged
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Yes,
I did clean inside the throttle body. It wasn't that dirty anyway. I also sprayed some lube (liquid wrench silicone) on the leakage.
It's very weird. At times, it seems the gas pedal has no effect, like it's not connected.
Would a failed / failing sensor cause this?
Any help would be appreciated.
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frontierguy
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| Posted: Jun 08 2014 at 7:06pm | IP Logged
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Check engine lite on? Are you using a Nissan oil
impregnated air filter? As lakota mentioned, did you clean
the fine wires of the MAFS not just the throttle body air
passage?
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'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
Nissan Technician 25 + years
2011 John Deere X720SE
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NF2000
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| Posted: Jun 08 2014 at 8:58pm | IP Logged
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H,
>Check engine lite on?
No, other than this problem, the truck is running great.
>Are you using a Nissan oil
impregnated air filter?
No, and I haven't for years (7+)
>did you clean
the fine wires of the MAFS
No, this isn't mentioned in Chilton's Nissan Frontier book. Can you point me to a specific procedure?
Would a failure of the MAFS sensor cause an intermittent problem?
Thanks.
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Boomer
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| Posted: Jun 09 2014 at 8:37am | IP Logged
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Almost sounds that as the demand for fuel increases rapidly (you are poushing down the gas pedal to satrt a large piece of metal), there is something obstructing fuel flow.
1. Is the fuel pump starting to go? I am not sure wher the pump is on a 2000 but if it is in the tank, this is the type of symptom I have seen when these start to go. Is there any constant whining from the pump?
2. Is the fuel filter clogged and not allowing fuel to flow?
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2007 Nissan Frontier SE 4X4
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NF2000
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| Posted: Jun 10 2014 at 1:37am | IP Logged
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Hi,
>1. Is the fuel pump starting to go?
The fuel pump is still working, but I don't know if it is working fully / correctly. According to Chilton's I will need vacuum gauge to measure (and compare to std). I haven't done this type of work before so...
>2. Is the fuel filter clogged and not allowing fuel to flow?
The fuel filter appears to be working normally.
Thanks.
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frontierguy
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| Posted: Jun 11 2014 at 7:37pm | IP Logged
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Remove the air cleaner. Look into the small opening of the
throttle assy., you will see the wires of the MAFS, clean
w/ approved cleaner, install Genuine Nissan oil impregnated
air filter. Yes, a malfunctioning MAFS will cause your
concern. Be sure the lower rubber seal along w/ the upper
rubber grommets are in place for the air cleaner assy.
There is also the chance of moisture and dirt in the dist.
of the engine. There is a new revised dist available, but
usually all that is required is cleaning out the dirt and a
new NISSAN cap and rotor.
__________________
'10 Altima SL
Traded 08 Frontier for 16 Frontier SV CC Long box, quite an upgrade. I do miss the 6 speed and Dynomax ex.
Nissan Technician 25 + years
2011 John Deere X720SE
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NF2000
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| Posted: Jun 20 2014 at 4:43pm | IP Logged
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Hi,
I have been busy for the last several days with work related commitments. I hope to get to work on this truck this weekend.
I will post an update.
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Nissan Frontier Forums : Problems / Technical
Topic: intermittent acceleration problem
